EXCEL 10 W7761A INPUT/OUTPUT DEVICE
29
74-2699
1
2
3
4
5
6
7
8
E-BUS
24 VAC
W7761A
REMOTE I/O
DEVICE
1
2
1
2
EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM.
USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM
2
)
WITH A MINIMUM OF 18 AWG (1.O MM
2
), FOR EARTH GROUND WIRE.
TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED
TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.
E-BUS
E GND
GND
GND
GND
NOT USED
NOT USED
AI-1 OHM
AI-2 OHM
9
10
11
12
14
J3
15
31
30
29
28
27
26
25
24
23
22
21
20
24 VAC COM
E-BUS
JACK
22 VDC OUT
19
18
17
16
AI-3 OHM
AI-4 OHM
AI-6 V/mA
OUT 7
OUT 6
OUT 5
OUT 4
OUT 8
OUT 1
OUT 3
OUT 2
AI-5 V/mA
13
DI-2
DI-4
DI-1
DI-3
M15279
GND
GND
TRIAC EQUIVALENT CIRCUIT
24 VAC
+
-
24 (H)
24 (N)
PWM
(H 24 VAC)
PWM OUTPUT
FROM CNTRL
ML7984B
T6
T5
C
B
W
R
PWM
VALVE ACTUATOR
FAN
CONTACTOR (24 VAC)
LINE POWER
Fig. 19. Typical PWM Valve Actuator and miscellaneous fan control to W7761A. (For note 2, refer to Fig. 15.)
